package com.nikanbujian.reggie.controller;

import com.nikanbujian.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {

    @Value("${reggie.path}")
    private String path;
    @PostMapping("/upload")
    public R<String> upload(MultipartFile file){

        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        String name = UUID.randomUUID().toString()+substring;
        File file1=new File(path);
        if (!file1.exists()){
            file1.mkdirs();
        }
        try {
            file.transferTo(new File(path+name));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return R.success(name);
    }
    @GetMapping("/download")
    public void download(String name, HttpServletResponse response){
        try {
            FileInputStream fileInputStream=new FileInputStream(new File(path+name));
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");
             int len=0;
             byte[] bytes=new byte[1024];
             while ((len=fileInputStream.read(bytes))!=-1){
                 outputStream.write(bytes,0,len);
                 outputStream.flush();
            }
             outputStream.close();
             fileInputStream.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
